mirror of
https://github.com/jerryscript-project/jerryscript.git
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ff22634e27
This PR is a general cleanup for garbage collection and memory
allocation code paths.
Changes:
* Removed an unnecesary local variable from 'ecma_gc_mark'.
* Refactored 'ecma_gc_run' to have an implicit list head during
iteration, which results in one less condition in the loops,
and changed the loops to use compressed pointers to reduce the
overall amount of compression/decompression.
* Renamed 'jmem_free_unused_memory_severity_t' to 'jmem_pressure_t',
and added additional values.
* Removed 'jmem_free_unused_memory_callback', instead
'ecma_free_unused_memory' is now called directly.
* Reworked 'ecma_free_unused_memory' to handle all code paths related
to 'jmem_pressure_t', and moved all relevant code paths into this
function. This simplifies the code paths in other places.
* Reworked 'jmem_heap_gc_and_alloc_block' to be more streamlined.
* Changed mem-stats to not report unused pool chunks as allocated
memory.
* Created an allocator internal API for allocating/freeing memory blocks
that are not reported as used memory in mem-stats.
* Removed iteration statistics for the jerry allocator from mem-stats,
as they don't provide any actually useful information.
Co-authored-by: Marko Fabo <mfabo@inf.u-szeged.hu>
JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai@inf.u-szeged.hu
87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
/* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef JMEM_ALLOCATOR_INTERNAL_H
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#define JMEM_ALLOCATOR_INTERNAL_H
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#ifndef JMEM_ALLOCATOR_INTERNAL
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# error "The header is for internal routines of memory allocator component. Please, don't use the routines directly."
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#endif /* !JMEM_ALLOCATOR_INTERNAL */
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/** \addtogroup mem Memory allocation
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* @{
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*/
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/**
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* @{
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* Valgrind-related options and headers
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*/
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#if ENABLED (JERRY_VALGRIND)
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# include "memcheck.h"
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# define JMEM_VALGRIND_NOACCESS_SPACE(p, s) VALGRIND_MAKE_MEM_NOACCESS((p), (s))
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# define JMEM_VALGRIND_UNDEFINED_SPACE(p, s) VALGRIND_MAKE_MEM_UNDEFINED((p), (s))
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# define JMEM_VALGRIND_DEFINED_SPACE(p, s) VALGRIND_MAKE_MEM_DEFINED((p), (s))
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# define JMEM_VALGRIND_MALLOCLIKE_SPACE(p, s) VALGRIND_MALLOCLIKE_BLOCK((p), (s), 0, 0)
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# define JMEM_VALGRIND_FREELIKE_SPACE(p) VALGRIND_FREELIKE_BLOCK((p), 0)
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#else /* !ENABLED (JERRY_VALGRIND) */
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# define JMEM_VALGRIND_NOACCESS_SPACE(p, s)
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# define JMEM_VALGRIND_UNDEFINED_SPACE(p, s)
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# define JMEM_VALGRIND_DEFINED_SPACE(p, s)
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# define JMEM_VALGRIND_MALLOCLIKE_SPACE(p, s)
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# define JMEM_VALGRIND_FREELIKE_SPACE(p)
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#endif /* ENABLED (JERRY_VALGRIND) */
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/** @} */
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void jmem_heap_init (void);
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void jmem_heap_finalize (void);
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bool jmem_is_heap_pointer (const void *pointer);
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void *jmem_heap_alloc_block_internal (const size_t size);
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void jmem_heap_free_block_internal (void *ptr, const size_t size);
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/**
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* \addtogroup poolman Memory pool manager
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* @{
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*/
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void jmem_pools_finalize (void);
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/**
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* @}
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* @}
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*/
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/**
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* @{
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* Jerry mem-stat definitions
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*/
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#if ENABLED (JERRY_MEM_STATS)
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void jmem_heap_stat_init (void);
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void jmem_heap_stat_alloc (size_t num);
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void jmem_heap_stat_free (size_t num);
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#define JMEM_HEAP_STAT_INIT() jmem_heap_stat_init ()
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#define JMEM_HEAP_STAT_ALLOC(v1) jmem_heap_stat_alloc (v1)
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#define JMEM_HEAP_STAT_FREE(v1) jmem_heap_stat_free (v1)
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#else /* !ENABLED (JERRY_MEM_STATS) */
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#define JMEM_HEAP_STAT_INIT()
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#define JMEM_HEAP_STAT_ALLOC(v1) JERRY_UNUSED (v1)
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#define JMEM_HEAP_STAT_FREE(v1) JERRY_UNUSED (v1)
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#endif /* ENABLED (JERRY_MEM_STATS) */
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/** @} */
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#endif /* !JMEM_ALLOCATOR_INTERNAL_H */
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